Roller-bearing.



G. RENNERPBLT.

ROLLER BEABIN G. APPLICATION FILED APR. 9, 19o?.

Patented Mar. 8,- 1910.

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UNITED srafrs GUSTAF RENNERFELT, OF SCRANTON, PENNSYLVANIA.

ROLLER-BEARING.

Specification of Letters Patent.

To all whom it may concern:

Be it known that I, Gusrar RENNERFELT, a subject of the King of Sweden,and a resident of Scranton, in the county of Lackawanna and State ofPennsylvania, United States of America, have invented certain new anduseful Improvements in Rollen Bearings, of which the following is aspecication.

My invention relates to improvements in roller bearings, and its objectis to provide a bearing of this class which is simple and cheap in itsconstruction and efficient in its operation.

I will describe my invention in the following specification, and pointout the novel features thereof in claims.

Referring to the drawings, Figure 1 is an end elevation of a bearingmade according to my invention, with one of its side-plates removed.Fig. 2 is a sectional side elevation of the same bearing, the sectionbeing taken on line X-X of Fig. 1. Fig. 3 is a sectional view of one ofthe bearing rollers shown in Fig. 1, this section being taken on theline X--X of Fig. l. Fig. 4 is a sectional View of the spider shown inFigs. 1 and 2, the section being taken on line Y-Y of Fig. 2; Fig. 5 isan elevational view of a modified form of the spider.

Like characters of reference designate corresponding parts in all of thefigures.

10 designates a shaft to which my bearing is applied.

11 designates a bushing, preferably of steel, placed over the shaft andarranged to rotate with it; the bushing may thus be considered as a partof the shaft.

12 designates a cog-wheel through which a load may be applied to thebearing.

20, 20, 20 designate a plurality of rollers with flat ends, made ofsteel or other desired material, and of short length as com pared withtheir diameter. As clearly shown in Fig. 3, the roller 20 is formed witha curved face so that it constitutes the equatorial section of a sphere,this form being preferred in such cases where from any cause there maybe a deviation between the center line of the shaft and the center lineof the bearing. I also prefer to make the roller hollowor of ring form,as shown in Fig. 3 of the drawings, so as to decrease its weight andincrease its elasticity.

8O designates a portion of an outer casing run upon, and which isarranged to support the rollers and the shaft.

32, 32 designate plates which may be arranged to be fastened one on eachside of the track portion 30 by means of bolts 33 or one of them may beformed integrally with the track portion as shown in Fig. 2. Theseside-plates thus form portions of the outer casing which supports therollers and the shaft. The plates are preferably shaped so that theyform annular grooves 34, 34 on each side of the track 31, which groovesserve as receptacles for dust or grit which may accidentally enter thebearing. The side-plates 32 are preferably formed with ribs orprojections 35, 35, the plane surfaces of which may be tooled until theyare smooth and parallel to each other, and at a distance apart slightlygreater than the length of the roller, so that the ribs 35 are in loosecontactwith the end surfaces of the rollers and serve the purpose ofguiding the rollers and holding them in parallelism, and in a plane at aright-angle to the shaft. One of the plates is provided with a lip 36Patented Mar. 8, 1910.

arranged to take up end pressure from the bushing 11.

40 designates a spider having a hub 41 loosely mounted on the bushingand having a plurality of arms 42 which extend between the rollers 2Oand between the side-plates 32. The hub 41 of the spider is providedwith openings or pockets 43 through which the rollers are in contactwith the bushing 11. The arms 42 serve to maintain an approximatelyconstant distance between the rollers. The distance between the outerends of the arms 42 is designed or constructed, as by grinding, so as togive the rollers a small amount of clearance between said ends.

In Fig. 5 I have shown the spider constructed with yielding arms. Thisisa preferred construction as it causes less noise in operation. In thiscase the arms 42A of the spider are each constructed of two springsriveted to the body portion 41A of the spider 40A.

lVhat I claim is:

1. A roller bearing comprising a shaft, a track and a plurality ofhollow flexible rollers adapted to sustain the entire load upon thebearing, said rollers having each a spherical rolling surface, thediameter of each roller being greater than its length.

2. A roller bearing comprising a shaft, a

which forms a track 31 for the rollers to i track and a plurality ofhollow flexible rollers adapted to sustain the entire load. upon thebearing, said rollers haif'ing each a spherical rolling surface, thediameter of each roller1 being greater than its length; in combinationwith means for maintaining the aries of the rollers in parallelism witheach other and the shaft.

3. A roller bearing comprising a shaft, a track, and a plurality offlexible, spherical rollers each of hollow or ring form; in com binationwith means independent of said rollers for maintaining their axes inparallelism with the axes of the shaft.

4l. rfhe combination of a shaft, a track, a plurality of mobile flexiblerollers having flat ends and spherical faces, means for keeping therollers in parallelism with the shaft, and means for maintaining adistance between the rollers.

rlhe combination of a shaft, a track, a plurality of flexible rollershaving fiat ends and spherical faces, plates fastened to the track andarranged to keep the rollers in parallelism, and a spider having' a hubloosely mounted on the shaft, the spider having a plurality of armsextending between the rollers and between the plates, said arms arrangedto maintain a distance between the rollers.

G. The combination of a shaft, a track, a plurality of flexible rollershaving fiat ends and spherical faces, a plate integral with the track, aplate fastened to the track, said plates arranged to keep the rollers inparallelism, and a spider having a hub loosely mounted on the shaft, thespider havinga plurality of arms extending between the rollers andbetween the plates, said arms arranged to maintain a distance betweenthe rollers.

7. A. roller bearing comprising a. pressure transmitting member', apressure susta iing member, and a plurality of rollers between saidmembers, each roller constituting a hol low section of a sphere.

8. The combination of a shaft, a track, a plurality of flexible rollershav-ing flat ends and spherical faces, and a spider loosely mounted onthe shaft and arranged to maintain a distance between the rollers.

9. The combination of a shaft, a track, a plurality of flexible rollershaving sphen ical faces, said rollers being located between the shaftand. the track, means for malntaining the rollers in parallelism withthe shaft, a spider loosely mounted upon the shaft having arms extendingbetween the rollers and being provided with pockets through which saidrollers have contact with the shaft.

10. The combination of a shaft, a track, a plurality of flexible rollershaving spherical faces, said rollers being located between the shaft andthe track, a spider having a hub loosely mounted on the shaft and havinga plurality of arms extending between the rollers to maintain a distancebetween them, said spider being provided with pockets through which therollers have contact with the shaft.

l1. The combination of a shaft, a track, a plurality of flexible rollershaving spherical faces and flat ends, plates fastened to the track andarranged to keep the rollers in parallelism with the shaft, and a spiderhaving a hub loosely mounted on the shaft, the spider having a pluralityof arms extending between the faces of the rollers and between theplates and arranged to maintain a` distance between the rollers, saidspider being provided with pockets through which the rollers havecontact with the shaft.

l2. The combination of a shaft, a bushing thereon, a track, r,aplurality of exible rollers having spherical rolling surfaces and .flatends, said rollers being' located between the bushing and the track,plates fastened to the track and arranged to keep the rollers inparallelism with the shaft, and a spider having a hub loosely mountedupon the bushing, the spider having a plurality of arms extendingbetween the faces of the rollers and between the plates and arranged tomaintain a distance between the rollers, said spider being provided withpockets through which the rollers have contact with the shaft. i

13. The combination of a shaft, a cylindrical bushing thereon, a track,a plurality of rollers having flat ends, said rollers constitutinghollow sections of spheres, plates fastened to thetrack and arranged tokeep the rollers in parallelism with the shaft, and. a spider betweenthe plates, said spider having a hub loosely mounted upon the bushing,and having a plurality of arms extending between and coacting with thefaces of the rollers to maintain a distance between the rollers, saidspider' being provided with pockets through which the rollers havecontact with the shaft.

lll. The combination ofl a shaft, a track, a plurality of flexiblerollers haring flat ends and spherical faces, plates fastened to thetrack and arranged to keep the rollers in parallelism, and a spiderloosely mounted` on the shaft; the spider having a plurality of armsextending between the rollers and between the plates, said arms arrangedto maintain a distance between the rollers.

ln testimony whereof, l have signed my f

